Rail passengers in parts of the West Midlands are advised to only travel if necessary later this week during two days of planned strikes.
The walkout will affect West Midlands Railway’s (WMR) services in Birmingham and the Black Country, Wolverhampton, Warwickshire, Shropshire, Herefordshire, Worcestershire and Staffordshire on 22 and 23 May.
The operator said “a very limited service” would be running because of the action, which has been organised by members of the TSAA trade union.
Managing director Ian McConnell said: “We encourage TSSA to continue talks with us to reach a resolution to this dispute.” The BBC has also approached the union.